A simple pendulum is made by suspending a bob of mass 1 kg by a string of length l. Now if the length of this pendulum is increased to 4l, then its time period T will :

1. remain the same
2. become twice
3. become four times
4. become half

The time period of a seconds' pendulum clock is —

1. 1 s
2. 2 s
3. 1 min
4. 12 h

The time period of a simple pendulum depends on :

1. Length of pendulum
2. Amplitude of oscillation
3. Mass of bob
4. All of the above

The time period of two pendulums of length 1 m and 16 m are in ratio :

1. 1 : 16
2. 1 : 4
3. 16 : 1
4. 4 : 1